It precisely describes the problem, right?
The module was created in Mx7. To open it in 9, you first have to open it in 8 and export it again.
Besides this, a lot has changed between 7 and 9, so chances are that it won't work.
Indeed, when I tried to download the it, there was a message providing the guidance.
Thanks for your answers. Actually even importing it into Mx8 it's failing. It works only on Mx7 for me, which is not my goal.